Stator core of large wind driven generator and manufacturing method thereof
A technology for wind turbines and stator cores, applied in the manufacture of stator/rotor bodies, magnetic circuit shapes/styles/structures, magnetic circuit static parts, etc., can solve the problems of burning motors, difficulty in reaching, breakdown, etc., and achieve The effect of reducing vibration and noise, controlling the axial height difference, and preventing excessive tooth tension
Active Publication Date: 2011-04-06
CSR ZHUZHOU ELECTRIC CO LTD
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Problems solved by technology
[0006] However, these patents only improve the manufacturing process of the motor stator from the press-fitting method, but for the stator of the wind power generator, especially the stator of the megawatt-class wind power generator, the diameter of the outer circle of the stator core is very large (such as 2.5MW The stator diameter of the wind turbine is 4800mm), and the opening angle of the stator coil is very small. After the stator core is made by ordinary press-fitting tooling, it is difficult to control the stator core tooth opening to no more than 2mm with a common end plate with a thickness of 20-30mm. The main reason is that the contact surface is too large, and it is difficult to ensure the flatness of the end plate itself, but this will greatly affect the performance of the product, because if the iron core teeth stretch exceeds 2mm, the insulating layer will appear uneven when the iron core is insulated, and the thickness of the glue It is difficult to control, and it is difficult to meet the requirement of film thickness of 4-5um. At the same time, the glue is easy to overflow when pressurized, resulting in many glue spots in the punching tank, which causes difficulties and hidden dangers for the next process of embedding wires, and the coil insulation is easy. Damage, in serious cases, it will cause ground breakdown and burn the motor
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Embodiment 1
[0019] Such as figure 1 As shown, a stator core of a large-scale wind power generator includes a plurality of silicon steel sheet punches 1, the silicon steel sheet punches 1 are stacked together, and end plates 2 and 3 are arranged at both ends of the silicon steel sheet punches 1, One side of the end plates 2 and 3 is closely attached to the punched silicon steel sheet 1, and the punched silicon steel sheet 1 is tightly stacked by the fastening bolt 4 through the end plates 2 and 3; the characteristic is that the end Plates 2 and 3 are formed by stacking a plurality of self-adhesive silicon steel end plate punches, and the self-adhesive silicon steel end plate punches are composed of a silicon steel sheet 5 coated with a self-adhesive adhesive layer 6 on the end surface; Self-adhesive silicon steel end plate punching film thickness is 4-5um; self-adhesive silicon steel end plate punching height is 20mm; end plate is stacked by self-adhesive silicon steel end plate punching a...
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The invention relates to a stator core of a large wind driven generator and a manufacturing method thereof. The stator core comprises a plurality of silicon steel sheet stampings which are laminated together, wherein the two ends of each silicon steel sheet stamping are provided with an end plate respectively; one side of the end plate is tightly adhered to the silicon steel sheet stamping; and the silicon steel sheet stampings are tightly laminated through the end plates at the two ends by fastening bolts. The stator core is characterized in that: the end plate is formed by laminating a plurality of self-adhesive silicon steel sheet end plate stampings; the self-adhesive silicon steel sheet end plate stamping is formed by coating a self-adhesive glue layer on the end face of each silicon steel sheet; the lamination height of the self-adhesive silicon steel sheet end plate stampings is 20mm; and the end plate is manufactured by forming, pressurizing and baking the self-adhesive silicon steel sheet end plate stampings.
Description
technical field [0001] The invention relates to a generator stator component structure and a manufacturing method thereof, in particular to a large-scale wind-driven generator stator core and a manufacturing method thereof, which are mainly used in the manufacture of the stator core of a large-scale wind-driven generator. Background technique [0002] Generators generally include two parts, the stator and the rotor; for ordinary motors, such as railway traction motors and urban rail motors, the diameters of the stator core and the rotor core are relatively small, generally below 1000mm, so the stator core is made of ordinary silicon The punched steel sheets are superimposed, and the two ends are clamped with toothed pressure plates or end plates with a thickness of 5mm or 8mm, and the toothed pressure plates or end plates are clamped by fastening bolts to make the silicon steel sheets tightly stacked together, so that It is very good to control the tension of the iron core t...
Claims
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IPC IPC(8): H02K1/12H02K15/02
Inventor杨秋梅
OwnerCSR ZHUZHOU ELECTRIC CO LTD